Jul 5, 2011 9:00pm PDT
that went off all night long last night did some damage and really created a big mess in many areas. we caught illegal displays in the sky over oakland last night. fairly elaborate displays, too. cecelia spoke with resident in berkeley who had fireworks going off all around them laste around the corner illegal fireworks weren't so kind. this vacate apartment apartment building wept up in flames. fire investigators have no doubt about what caused it. >> berkeley had their fireworks last night. we would have encouraged our residents and community. >>reporter: east oakland this also torched. fire investigators are looking into whether smoldering illegal fireworks are to blame. fourth of july fireworks spectacular. lighting up the skies like big budget professional shows. only there weren't any professionals around for the illegal displays. >> literally explodes and like all around. >>reporter: sign of how explosive the problem is, this drop-off barrel at fire station in east oakland practically empty. just around the corner a street littered with remains of neighborhood fireworks show.